Geometry

2. / a parallelogram with opposite equal acute angles and opposite equal obtuse angles, and four equal sides
3. / round plane figure, whose boundary consists of points equidistant from a fixed point
5. / a plane figure with at least three straight sides and angles
6. / is an arc of a circle having measure greater than or equal to the radians
8. / never ends
9. / straight segment whose endpoints both lie on the circle
12. / formed by two chords in a circle which have a common endpoint
13. / a straight line that cuts a curve in two or more parts.
14. / plane figure with three straight sides and three angles
16. / length of the adjacent side divided by the length of the hypotenuse
17. / a plane figure with four equal straight sides and four right angles

1. / circles with common centers
4. angles / the angle between a side of a rectilinear figure and an adjacent side extended outward
5. / is a location
7. angles / each of the pairs of opposite angles made by two intersecting lines
10. / straight line or plane that touches a curve or curved surface at a point
11. / is an arc of a circle having measure less than or equal to the radians
12. angels / the angle between adjacent sides of a rectilinear figure
15. / is a line with an endpoint that extends infinitely in one direction